Radiator tank



Nov. 18, 1930. w. G. CAMPBELL RADIATOR TANK Filed Oct. 31, 1928 InventorW/Zape ('a m azeiZ Patented Nov. 18, 1930 UNlTED STATES PATENT OFFICE.-

RADIATOR TANK Application filed October 31, 1928. Serial No. 316,325.

.The present inventionrelates to radiators for the cooling system ofinternal combustion engines and more particularly to a tank associatedwith the radiator and has for its principal object to provide a tankconstruction through the use of which waste due to evaporation of thefluid in the cooling system is prevented. I

A further object of the invention is to provide a tank embodying a pairof liquid chambers disposed in superposed relation with communicatingmeans therebetween and means connecting the lowermost chamber isdisposed out of the path of-circulation of the fluid whereby to maintainsaid upper chamber at a lower temperature for condensing any vaporgenerated in the lower chamber and thus serving to return the fluid tosaid lower chamber in its liquid form.

A further object of the invention is to provide an apparatus of thischaracter which is automatic in its operation and which functionswithout the necessity of employing control valves or other movingelements.

Other objects and advantages reside in the special construction,combination and arrangement of the various elements forming theinvention as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to parts throughout, and in which:

Figure 1 is a vertical sectional View through a conventional type ofradiator showing the tank mounted in position with respect thereto,

Figure 2 is a fragmentary vertical sectional view taken substantiallyalong a line 22\ of Figure 1, and

Figure 3 is a horizontal sectional view through the upper tank chambertaken substantially along a line 3 3 of Figural.

Referring now to the drawing in detail,

- wherein for the purpose of illustration I have disclosed a preferredembodiment of the invention, the numeral 5 designates a radiator core ofconventional construction and sofa type generally employed or for usewith the w1th the water circulation system of the en-, gine while theuppermost of said chambers like h an overflow pipe l5which extendsupwardly internal combustion vehicles. I

The tubes 6 of the radiator are arranged in direct communication with atank 7 sup-- ported at the upper portion thereof. As clearly illustratedin Figures 1 and 2 of the drawing, the tank includes an upper liquidchamber 8 and lower liquid chamber 9, the present embodiment of theinvention showing the upper chamber constructed of a larger area thanthe lower chamber.

The chambers 8 and 9 are separated by a horizontal partition 10 fromwhich a neck 11 depends downwardly into the lower chamber 9. The loweredge of the neck 11 terminates substantially below the horizontal planeof the partition and while the neck provides direct communicationbetween the respective chambers, it will be apparent that upon thefilling of the tank that air will collect in the upper portion of thelower chamber above the lower edge of the neck and. will be preventedfrom escaping from the lower chamber as long as any liquid remains inthe upper chamber.

The lower chamber 9 is provided with the usual pipe extension 12connecting with the water jacket of the engine, said pipe extensionentering the lower chamber at a point below the horizontal plane of thelower edge of the neck 11 as clearly illustrated in Figure 1 ofthedrawings.

The top of the tank is provided with the usual filler neck 13 andradiator cap 14 and engines of motor driven through the tank terminatingat its upper end in the neck 13. It will be apparent from the foregoingthat during the operation of the engine that the water or other coolingfluid used in the radiator will enter the lower chamber 9 from'theengine through the pipe extension 12 and return to the engine throughthe tube 6 and return pipe 16 at the bottom (1301171011 of the radiator.

A baflle 17 is placed within the lower chamber 9 in association with theintake end of the pipe'12 for distributing the fluid toward each end ofthe chamber 9. It will be apparent that the upper chamber 8 is out ofthe path of the circulation of the fluid and conse- 193 quently will bemaintained at a lower temperature than the fluid in the lower chamber 9.The air space in the upper portlon of the lower chamber 9 assists inmaintaining this difference in temperature. Should the fluid in thecirculation system become heated to such an extent as to causevaporization, the vapor will be trapped in the air space at the upperportion of the lower chamber 9 and prevented from escaping. The heatedfluid in the lower chamber has a natural tendency to rise and will passthrough the neck 11 and upon contact with the liquid in the upperchamber 8 will operate to prevent vaporization in the upper chamber.Evaporation of the fluid within the circulation system is thus preventedand the liquid contained in the upper chamber 8 serves to maintain theliquid in the circulation system at a normal level.

It is obvious that my invention is susceptible to various changes andmodifications in construction without departing from the spirit of theinvention or the scope of the appended claims, and I accordingly claimall such forms of the device to which I am entitled.

Having thus described my invention, what I claim as new is:

1. A radiator tank having a horizontal partition formed therein wherebyto provide upper and lower chambers within the tank, said upper chamberbeing provided with a filler cap and said lower chamber being interposedin the fluid circulation system of the radiator and a neck dependingfrom said partition with its lower edge'terminating in saidlower-chamber below the hori zontal plane of the partition whereby toprovide an air space in the upper portion of said lower chamber at theunder side of the partition, for trapping the vaporized fluid created insaid lower chamber.

2. In a radiator of the class described, a plurality of liquid chambersarranged in superposed relation, a neck providing communication betweensaid chambers and terminating in the lower chamber intermediate its topand bottom walls whereby to form an air space in the lower chamber whenboth chambers are supplied with liquid, said lower chamber beinginterposed in the circulation system of the radiator and said upperchamber being disposed out of the path of circulation of the fluid insaid system.

3. In a radiator of the class described, a liquid circulating chamberand a non-circulating liquid chamber and a neck connecting said chambersand arranged to provide a closed air space within the circulatingchamber and coextensive with the surface area of the liquid therein whenboth chambers are supplied with liquid.

4. A tank for radiators having a lower liquid circulating chamber and anupper non circulating liquid chamber and a neck depending fromsaid lastnamed chamber insaid first named chamber and terminating below thehorizontal plane of the top of said first named chamber whereby to forman air space at the upper portion of said first named chamber fortrapping vaporized fluid created in said first named chamber.

In testimony whereof I afiix my signature.

WALLACE G. CAMPBELL.

